Any animals look for steangth mostly because the offspring can probobly onther trait is looks. The male will try to impess the female.
Answer:
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Explanation:
used in fire extinction, blasting rubber, foaming rubber and plastic
Answer: b.) they tend to lose electrons to gain stability
Explanation:
With a process called Fission. This generates heat to produce steam.
Answer:
12.50g
Explanation:
T½ = 2.5years
No = 100g
N = ?
Time (T) = 7.5 years
To solve this question, we'll have to find the disintegration constant λ first
T½ = In2 / λ
T½ = 0.693 / λ
λ = 0.693 / 2.5
λ = 0.2772
In(N/No) = -λt
N = No* e^-λt
N = 100 * e^-(0.2772*7.5)
N = 100*e^-2.079
N = 100 * 0.125
N = 12.50g
The sample remaining after 7.5 years is 12.50g